There are other references to Lothlend/Laithlind. One that belongs certainly to the ninth century occurs in a well-known poem—quoted so often that it has become trite—preserved uniquely as a marginal entry in Sankt Gallen, Stiftsbibliothek, MS 904, a copy of Priscian’s Institutiones grammaticae, heavily glossed in Old Irish. There is some debate about its date and, latterly, its provenance. According to Bruno Güterbock, this manuscript was written in Ireland in the mid-ninth century: he dates it by reference to marginal notes that he thinks were written in 845 or 856.